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| Home > Publications database > Design Principles of High Efficient Fully Solution Processed Transparent Solar Modules |
| Contribution to a conference proceedings/Contribution to a book | FZJ-2026-00933 |
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2025
FUNDACIO DE LA COMUNITAT VALENCIANA SCITO València
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Please use a persistent id in citations: doi:10.29363/nanoge.matsusfall.2025.330
Abstract: Among the diverse array of photovoltaic technologies, organic and perovskite photovoltaics stand out as particularly promising candidates for transparent solar applications, each offering unique advantages. Organic photovoltaics (OPVs), based on an excitonic semiconductor, inherently provide true transparency while simultaneously enabling the harvesting of near-infrared (NIR) light, making them ideal for integration into windows and building facades. Perovskite solar cells, characterized by their direct bandgap and exceptionally high open-circuit voltages (Voc), stand out in capturing high-energy photons in the blue region of the spectrum with very low Voc losses, positioning them most suitable for tandem configurations.The combination of perovskites with organic PVs into tandem architectures emerges as a natural approach, leveraging the complementary spectral absorption and electronic properties of both materials. Such tandem systems not only improve overall efficiency but also offer tunability of transparency and color rendering index (CRI) through bandgap engineering of the individual layers. This flexibility enables the customization of optical appearance to meet aesthetic and functional requirements.In this contribution, we outline the fundamental design principles for developing highly efficient, transparent and fully solution processed organic PV modules. Additionally, first fully solution processed transparent wide bandgap perovskite modules will be shown. We further introduce an innovative voltage-matching concept tailored to reconcile the differing voltages of wide-bandgap perovskite and low-bandgap organic cells, addressing a key challenge in tandem device fabrication. Finally, we present the first demonstrators of transparent perovskite-organic tandem modules developed within the European project Citysolar, showcasing their potential for sustainable, aesthetically pleasing, and high-performance building-integrated photovoltaics.
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